<template>
    <div class="selection-component">
        <div class="selection-show" @click="showListHandle">
            <span>{{ selecterData[currentIndex].value }}</span>
            <div class="arrow"></div>
        </div>
        <div class="selection-list" v-show="flag">
            <ul>
                <li
                    v-for="(item, index) in selecterData"
                    :key="index"
                    @click="selectHandle(item, index)"
                >
                    {{ item.value }}
                </li>
            </ul>
        </div>
    </div>
</template>

<script>
export default {
    data() {
        return {
            flag: false,
            currentIndex: 0,
        };
    },
    props: {
        selecterData: {
            type: Array,
            default: function () {
                return [
                    {
                        value: "test",
                        id: 0,
                    },
                ];
            },
        },
    },
    methods: {
        showListHandle() {
            this.flag = !this.flag;
        },
        selectHandle(data, index) {
            this.currentIndex = index;
            this.flag = false;
        },
    },
};
</script>

<style scoped>
.selection-component {
    position: relative;
    display: inline-block;
}
.selection-show {
    border: 1px solid #e3e3e3;
    padding: 0 20px 0 10px;
    display: inline-block;
    position: relative;
    cursor: pointer;
    height: 25px;
    line-height: 25px;
    border-radius: 3px;
    background: #fff;
}
.selection-show .arrow {
    display: inline-block;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid #e3e3e3;
    width: 0;
    height: 0;
    margin-top: -1px;
    margin-left: 6px;
    margin-right: -14px;
    vertical-align: middle;
}
.selection-list {
    display: inline-block;
    position: absolute;
    left: 0;
    top: 25px;
    width: 100%;
    background: #fff;
    border-top: 1px solid #e3e3e3;
    border-bottom: 1px solid #e3e3e3;
    z-index: 5;
}
.selection-list li {
    padding: 5px 15px 5px 10px;
    border-left: 1px solid #e3e3e3;
    border-right: 1px solid #e3e3e3;
    cursor: pointer;
    background: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.selection-list li:hover {
    background: #e3e3e3;
}
</style>